Multiple Choice Questions'Clamp connections' are observed in
Basidiomycetes
Zygomycetes
Ascomycetes
Oomycetes
A.
Basidiomycetes
'Clamp connections' are observed in Basidiomycetes. These occur during the nuclear division of the dikaryotic cell. Their main function is to ensure that the sister nuclei of the dikaryon seperates into daughter cells.
Torula stage is observed in Zygomycetes. It produces a hypha, promycelium with terminal sporangium.
In Oomycetes hyphal wall consists of glucans and cellulose.
In Ascomycetes, spore of sexual stage is known as ascospores and are endogenous in origin. They are produced within sac like structures called asciwhich vary in shape.
Movements by pseudopodia of Amoeba are due to change in
pressure
atmosphere
temperature
viscosity
In Whittaker's system of classification prokaryotes belong to the kingdom
Monera
Protista
Animalia
Fungi
A genophore is made up of
a single double stranded DNA
a single stranded DNA
RNA and histones
histones and non- histones
There exists a close association between the alga and the fungus within a lichen. The fungus
fixes the atmospheric nitrogen for the alga
provides protection, anchorage and absorption for the alga
provides food for the alga
releases oxygen for the alga
Protists are
(i) unicellular and prokaryote
(ii) unicellular and eukaryote
(iii) multicellular and eukaryote
(iv) autotroph or heterotroph
(i), (ii) and (iii)
(ii), (iii) and (iv)
(iii), (iv)
(ii), (iv)
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